<template>
  <div :class="{node: true, root: isRoot || !show, 'node-error-state': showError}">
    <div v-if="show" @click="selected" :class="{ 'node-body': true, error: showError }">
      <div>
        <div class="node-body-header" :style="{ 'background-color': headerBgc }">
          <SvgIcon :name="headerIcon" style="margin-right: 5px" v-if="(headerIcon || '') !== ''" />
          <ellipsis class="name" hover-tip :content="title" />
          <el-icon class="el-icon-close" v-if="!isRoot" style="float: right" @click="delNode"><Close /></el-icon>
        </div>
        <div class="node-body-content">
          <SvgIcon :name="leftIcon" v-if="leftIcon"></SvgIcon>
          <span class="placeholder" v-if="(content || '').trim() === ''">{{placeholder}}</span>
          <ellipsis :row="3" :content="content" v-else />
          <el-icon><ArrowRight /></el-icon>
        </div>
        <div class="node-error" v-if="showError">
          <el-tooltip effect="dark" :content="errorInfo" placement="top-start">
            <el-icon><Warning /></el-icon>
          </el-tooltip>
        </div>
      </div>
    </div>
    <div :class="{ 'node-footer': true, space: merge }">
      <div v-if="merge" class="branch-merge">
        <img :src="branch" alt="" />
      </div>
      <div class="btn">
        <insert-button
          @insertNode="insertNode"
        ></insert-button>
      </div>
    </div>
  </div>
</template>

<script>
import { computed, reactive, toRefs } from 'vue'
import { ArrowRight, Close, Warning } from '@element-plus/icons-vue'
import branch from '/@/assets/branch.png'
import InsertButton from '/@/views/setting/workflow/process/InsertButton.vue'

export default {
    name: 'Node',
    components: {
        ArrowRight,
        Close,
        Warning,
        InsertButton
    },
    props: {
        //是否为根节点
        isRoot: {
            type: Boolean,
            default: false,
        },
        //是否显示节点体
        show: {
            type: Boolean,
            default: true,
        },
        //并行网关聚合
        merge: {
            type: Boolean,
            default: false,
        },
        //节点内容区域文字
        content: {
            type: String,
            default: '',
        },
        title: {
            type: String,
            default: '标题',
        },
        placeholder: {
            type: String,
            default: '请设置',
        },
        //节点体左侧图标
        leftIcon: {
            type: String,
            default: undefined,
        },
        //头部图标
        headerIcon: {
            type: String,
            default: '',
        },
        //头部背景色
        headerBgc: {
            type: String,
            default: '#576a95',
        },
        //是否显示错误状态
        showError: {
            type: Boolean,
            default: false,
        },
        errorInfo: {
            type: String,
            default: '无信息',
        },
    },
    emits: ['selected', 'delNode', 'insertNode', 'title:update'],
    setup(props, context) {
        const { title } = toRefs(props)
        const state = reactive({
            enableEdit: false
        })
        const titleContent = computed({
            get: () => {
                return title.value
            },
            set: val => {
                context.emit('title:update', val)
            }
        })
        const selected = () => {
            context.emit('selected')
        }
        const delNode = () => {
            context.emit('delNode')
        }
        const insertNode = (type) => {
            console.log('page', type)
            context.emit('insertNode', type)
        }
        return {
            ...toRefs(state),
            titleContent,
            selected,
            delNode,
            insertNode,
            branch
        }
    }
}
</script>

<style lang="scss" scoped>
:deep(.el-input) {
  width: 80%;
  .el-input__inner {
    padding: 0 !important;
    font-size: 12px;
    height: 20px;
  }
}
.root {
  &:before {
    display: none !important;
  }
}
.node-error-state {
  .node-body {
    box-shadow: 0px 0px 5px 0px #f56c6c !important;
  }
}
.node {
  padding: 0 50px;
  width: 320px;
  position: relative;
  &:before {
    content: '';
    position: absolute;
    top: -12px;
    left: 50%;
    -webkit-transform: translateX(-50%);
    transform: translateX(-50%);
    width: 0;
    border-style: solid;
    border-width: 8px 6px 4px;
    border-color: #cacaca transparent transparent;
    background: #f5f5f7;
  }
  .node-body {
    cursor: pointer;
    max-height: 120px;
    position: relative;
    border-radius: 5px;
    background-color: white;
    box-shadow: 0px 0px 5px 0px #d8d8d8;
    &:hover {
      box-shadow: 0px 0px 3px 0px var(--el-color-primary);
      .node-body-header {
        .el-icon-close {
          display: inline;
          font-size: medium;
        }
      }
    }
    .node-body-header {
      border-top-left-radius: 5px;
      border-top-right-radius: 5px;
      padding: 5px 15px;
      color: white;
      font-size: xx-small;
      :deep(.el-icon){
        display: inline;
      }
      .el-icon-close {
        display: none;
      }
      .name {
        height: 14px;
        width: 150px;
        display: inline-block;
      }
    }
    .node-body-content {
      padding: 18px;
      color: #656363;
      font-size: 14px;
      :deep(.el-icon) {
        position: absolute;
        top: 55%;
        right: 5px;
        font-size: medium;
      }
      .placeholder {
        color: #8c8c8c;
      }
    }
    .node-error {
      position: absolute;
      right: -40px;
      top: 20px;
      font-size: 25px;
      color: #f56c6c;
    }
  }

  .node-footer {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    .branch-merge {
      font-size: 12px;
      display: flex;
      width: 38px;
      border-radius: 50%;
      position: absolute;
      top: -40px;
      background: white;
      justify-content: center;
      flex-direction: column;
      box-shadow: 0px 0px 5px 0px #d8d8d8;
    }
    .btn {
      width: 100%;
      display: flex;
      padding: 20px 0 32px;
      justify-content: center;
    }
    // :deep(.el-button) {
    //   //height: 32px;
    // }
    &::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      z-index: -1;
      margin: auto;
      width: 2px;
      height: 100%;
      background-color: #cacaca;
    }
  }
}
.space {
  margin-top: 20px;
}
</style>